Defensive publication



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 18. 1969. 889 0.0. 687. abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chrouologic: The heading 0! each abstract indicates the number or pages of specification. including claims and sheets or drawings conta in the application as originally filed. The files of these applications are available to the public for inspection and reproduc may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice in no assertion as to the novelty of the disclosed subject matter.

PUBLISHED SEPTEMBER 20,1970 87S O.G. 1147- 4' T878,012 FINISH COMPOSITION 1? OR TEXTILE FIBERS Neil Lamar Finch, Kinston, N.C., assignor to E. I. du Pont de Nemours and Company, Wilmington, Del., a corporation of Delaware r Filed Jan.'15, 1969, Ser. No. 791,501

' Int. Cl. D0611: 15/66 U.S. Cl. 252-89 No Drawing. 7 Pages Specification A finish for synthetic fibers used in seat belts comprises (a) about 80 to 99 parts of -a random copolymcr of ethylcne oxide and 1,2-propylenc oxide having a molecular weight of about 8500 to 21,000; (b) about 2 to 6 parts of octylphenoxy-tctra(ethyleneoxykthunol; and (c) about 0.5 to 5 parts of a block copolymcr of ethylene oxide and dimcthylsiloxane having a molecular weight of about 1500 to 3,000 in which the repeat units from the ethylene 0x ide comprise about 75 to 90 percent of the copolymer. The finish may also contain about i to 5 parts of an antioxidant sclccted from n-propyl-3,4,S-Irihydroxybenzoate, (b) tri(mixed monoand di-nonylphcnyl)-phosphite and (c) 4,4-buiylidcnc-bis-(6-tcrt-butyl-m-crcsol).

An S lo-denier, l40-filament, melt-spun 66-nylon yarn drawn 5.6x having a tenacity of 8.6 gms./dcnier and an elongation of 18% may be coated with a 20% aqueous dispersion of the described finish with a finish roll just after the filaments of the yarn are extruded from a spinncret and solidify. The yarn has excellent lubricity and retains its inherent dycability. It does not support growth of bacteria or mold. 

